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<link rel='stylesheet' href='../../../js/sh/SyntaxHighlighter.css' type='text/css' />
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<textarea name='code' class='java:nogutter' rows='15' cols='120'>
/*
 * SmartGWT (GWT for SmartClient)
 * Copyright 2008 and beyond, Isomorphic Software, Inc.
 *
 * SmartGWT is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.  SmartGWT is also
 * available under typical commercial license terms - see
 * http://smartclient.com/license
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 */

import com.google.gwt.user.client.Timer;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.Img;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.layout.VLayout;

public class AnimationCustomSample implements EntryPoint {

    public void onModuleLoad() {
        VLayout layout = new VLayout();
        layout.setMembersMargin(10);
        layout.addChild(new OrbitImg());
        layout.draw();
    }

    public static class OrbitImg extends Img {
        public OrbitImg() {
            super("other/earth.png", 48, 48);
            setTop(0);
            setLeft(100);
            addClickHandler(new ClickHandler() {
                public void onClick(ClickEvent event) {
                    animateOrbit();
                }
            });
        }

        public void animateOrbit() {
            
            //TODO: isc.Animation.registerAnimation(this.animateOrbitStep, 2000, null, this);
            
            new Timer() {
                private double ratio = 0;
                public void run() {
                    animateOrbitStep(ratio);
                    ratio += 0.01;
                    if(ratio >= 1)
                        cancel();
                }
            }.scheduleRepeating(20);
            
        }

        public void animateOrbitStep(double ratio) {
            double angle = (Math.PI * 2) * ratio - (Math.PI / 2);
            moveTo((int) (Math.cos(angle) * 100 + 100), (int) (Math.sin(angle) * 100 + 100));
        }
    }

}
</textarea>
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